1 / 10

Non-hydrostatic sub-project report

Non-hydrostatic sub-project report. Jeff Whitaker (ESRL, sub-project lead) Jim Doyle (NRL: NEPTUNE/NUMA ) Jin Lee (ESRL: NIM ) Zavisa Janjic (NCEP: NMMB ) S.J. Lin (GFDL: HIRAM/FV3 ) Bill Skamarock and Joe Klemp (NCAR: MPAS ). Year 1 milestones.

osma
Download Presentation

Non-hydrostatic sub-project report

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Non-hydrostatic sub-project report Jeff Whitaker (ESRL, sub-project lead) Jim Doyle (NRL: NEPTUNE/NUMA) Jin Lee (ESRL: NIM) ZavisaJanjic (NCEP: NMMB) S.J. Lin (GFDL: HIRAM/FV3) Bill Skamarock and Joe Klemp (NCAR: MPAS)

  2. Year 1 milestones Idealized test cases (https://earthsystemcog.org/projects/dcmip-2012/test_cases) 1) Baroclinic Wave (DCMIP 4.1, due 6/1/2014): Basic test that does not exercise non-hydro dynamics. Look for effect of ‘special’ points (8 corners of cubes, 12 pentagons on icos grid, poles/polar filters on lat/lon grid). • Integration length: 20 days • Resolution: horizontal 120/60/30 and 15km.  30 and 60 vertical levels.  • 1/0.5/0.25/0.125 deg grids for 120/60/30/15 km runs. • Model Top: ~44km/2.26hPa • No invariant tracers, 14 pressure levels (winds, temp and vorticity) plus surface pressure/temp and 10-m winds.

  3. Year 1 milestones (cont)

  4. Year 1 milestones (cont) 2) Orographic mountain wave on a reduced-radius sphere without rotation (DCMIP 2.1 with additions, due 7/1/2014). Exercises dry non-hydro dynamics. • Circular and quasi-2d mountain, with and without vertical shear. • Sphere reduced by factor of 166.5, 2-h integration. • 30km model top with sponge layer, 0.5 degree output on model native levels.

  5. Quasi-2D mtnvsanalytic solution

  6. Circular mtn as in DCMIP 2.1

  7. Year 1 milestones (cont) 3) Not in DCMIP: 3D supercell thunderstorm on a reduced-radius sphere without rotation, with simple Kessler microphysics (due 8/1/2014). Details TBD by end of May. Exercises dry non-hydro dynamics, includes strong convective updrafts, cold pools, etc.

  8. Year 1 milestones (cont) 4) Optional (due to late arriving funds):Idealized Tropical Cyclone with Simple Physics(DCMIP 5.1). Exercises moist hydrostatic dynamics, simulation of coherent vortices.

  9. Year 1 milestones (cont) report summarizing all the idealized test results will be distributed to the group by 9/15, delivered to program manager by 10/1/2014.

  10. Year 2 Real data tests: • Hydrostatic scale forecasts (25 km resolution, vertical levels similar to GFS, one 7-day forecast every 3.5 days for one calendar year). Due Q2FY15. • Q3-Q4FY15: 3-km global forecasts for a couple of select cases (including severe weather over CONUS, and tropical cyclones). 2-3 day duration. • HPC challenge: NCAR experience suggests on 15-20K cores, a forecast will run in near real time. This means modeling group may need up to 20K cores for 2-3 days to complete each forecast (1+ million CPU hours per forecast)!

More Related